<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<style>
    ul{
        list-style: none;
        height: 40px;
        display: flex;
        justify-content: space-around;
        border-top: 1px solid gray;
        border-bottom: 1px solid gray;
    }
    a{
        text-decoration: none;
        color: black;
    }
    ul li{
        width: 25%;
        border-left: 1px solid gray;
        border-right: 1px solid gray;
        text-align: center;
        line-height: 40px;
    }
    
    #d1{
        width: 25%;
        text-align: center;
        line-height: 40px;
        border: none;
     
    }
</style>
<body>
    <ul>
        <li id="d1"><a href="#">我要投资</a></li>
        <li><a href="#">平台介绍</a></li>
        <li id="d1"><a href="#">新手专区</a></li>
        <li><a href="#">手机微金所</a></li>
        <li id="d1"><a href="#">个人中心</a></li>
    </ul>
</body>
</html>